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| author | Sean Rees <[email protected]> | 2017-02-08 22:30:59 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-02-08 23:41:43 +0000 |
| commit | a810007afe239d59c1115fcaa06eb5b480f876e9 (patch) | |
| tree | 25bbc5efa479af7cb1ca2defeeffb2040600a2fd /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | cpumask: use nr_cpumask_bits for parsing functions (diff) | |
| download | kernel-a810007afe239d59c1115fcaa06eb5b480f876e9.tar.gz kernel-a810007afe239d59c1115fcaa06eb5b480f876e9.zip | |
mm/slub.c: fix random_seq offset destruction
Commit 210e7a43fa90 ("mm: SLUB freelist randomization") broke USB hub
initialisation as described in
https://bugzilla.kernel.org/show_bug.cgi?id=177551.
Bail out early from init_cache_random_seq if s->random_seq is already
initialised. This prevents destroying the previously computed
random_seq offsets later in the function.
If the offsets are destroyed, then shuffle_freelist will truncate
page->freelist to just the first object (orphaning the rest).
Fixes: 210e7a43fa90 ("mm: SLUB freelist randomization")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Sean Rees <[email protected]>
Reported-by: <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Thomas Garnier <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions